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How To Know Yourself
One of the hardest things in the universe to understand is the interior of our own minds: we can have spent decades on the earth before we've grasped even very basic things about who we are and how we function. It's not for nothing that the Ancient Greeks felt philosophy had only one command: Know yourself! But however arduous, the journey can ...
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Japan uses piezoelectric ceramic tiles to convert electricity into electrical energy. These tiles capture the kinetic energy from your footsteps. When you walk, your weight and movements put pressure on the tiles. The ceramic tile bends slightly, resulting in mechanical stress. The piezoelectric material inside the ceramic tile converts this stress into electrical energy. Each step produces a small amount of electric charge, and millions of steps combined can produce enough electricity to drive
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